CN110021813A - A kind of integrated gradual change width surface wave antenna of substrate - Google Patents
A kind of integrated gradual change width surface wave antenna of substrate Download PDFInfo
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- CN110021813A CN110021813A CN201910305729.2A CN201910305729A CN110021813A CN 110021813 A CN110021813 A CN 110021813A CN 201910305729 A CN201910305729 A CN 201910305729A CN 110021813 A CN110021813 A CN 110021813A
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- metal plate
- upper layer
- wave antenna
- substrate
- gradual change
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The present invention discloses a kind of integrated gradual change width surface wave antenna of substrate, including metal floor, upper layer metal plate, dielectric-slab, short-circuit via hole and feed probes, the upper layer metal plate and metal floor are located at the upper and lower surfaces of dielectric-slab, the upper layer metal plate is equipped with the empty slot along laterally graded width, the short circuit via hole is arranged along the edge of the empty slot, the longitudinal center position of the empty slot is arranged in the feed probes, and passes through dielectric-slab and connect with upper layer metal plate.The present invention realizes high-gain, and the end-fire radiation of Low sidelobe level provides wider impedance bandwidth, has the characteristics that easy of integration, low section and be easily worked.
Description
Technical field
The present invention relates to communication antenna field, in particular to a kind of substrate integrates gradual change width surface wave antenna.
Background technique
Surface-wave antenna is a kind of common end-on-fire antenna, traditional mainly to have medium based on dielectric surface-wave antenna
Two kinds of structures of stick and media plate, are gradually reduced structural parameters of the dielectric rod along the direction of propagation or the thickness to media plate
Degree can make surface-wave antenna obtain preferable radiance.But this grading structure is not easy to be processed.
Common high-gain end-on-fire antenna implementation has:
(1) Medium Wave Guide slot antenna；
(2) leaky-wave antenna of longitudinal narrow slot is dug on the wide face of rectangular waveguide；
(3) the guided wave structure leaky-wave antenna of quasi- TEM.
Above scheme (1) needs to be gradually reduced the thickness of Medium Wave Guide, and this structure does not allow easy processing；Above scheme
(2) since abbe number is bigger, the gain bandwidth on end-on direction is narrow；Above scheme (3) needs air as matchmaker
It is situated between, and not easy to be processed.
Summary of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency provide a kind of integrated gradual change width of substrate
Surface-wave antenna, realizes the end-fire radiation of high-gain, and provides wider impedance bandwidth.
To achieve the above object, the integrated gradual change width surface wave antenna of a kind of substrate proposed by the present invention, including metal
Plate, upper layer metal plate, dielectric-slab, short-circuit via hole and feed probes, the upper layer metal plate and metal floor are located at medium
The upper and lower surfaces of plate, the upper layer metal plate are equipped with the empty slot along laterally graded width, and the short circuit via hole is along the empty slot
Edge arrangement, the feed probes are arranged in the longitudinal center position of the empty slot, and pass through dielectric-slab and upper layer metal plate
Connection.
Preferably, the empty slot long side of the upper layer metal plate and the length of short side are respectively 12mm, 4mm, the empty slot edge
Lateral length be 151.5mm.Wherein, the long side of the empty slot and short side are 3mm at a distance from the metal plate broadside of upper layer.
Preferably, the short-circuit internal surface of hole of crossing covers copper, and the diameter of short-circuit via hole is 1mm, two neighboring short circuit via hole
Spacing is 1.5mm.
Preferably, the feed probes are 3.5mm at a distance from the empty slot long side of upper layer metal plate.
Preferably, the dielectric-slab is solid dielectric, and the long side of dielectric-slab is 184.5mm, broadside 40mm.
Preferably, the metal floor and upper layer metal plate such as are at the big rectangle.The metal floor and upper layer metal plate are
Planar structure, and all it is close to dielectric-slab.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
1, it present invention employs medium Integrated Waveguide Technology, solves the problems, such as that conventional surface wave antenna is not easy to be processed, has
The characteristics of having easy of integration, low section and being easily worked.
2, the present invention upper layer metal plate introduce gradual change width empty slot, the structure of the gradual change width facilitate surface wave and
The conversion of space wave so that surface wave relative relaxation be attached on integrated waveguide, to realize high-gain, Low sidelobe level
It is radiated with the end-fire of big 3dB gain bandwidth.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of surface-wave antenna described in the embodiment of the present invention；
Fig. 2 is the top view of surface-wave antenna described in the embodiment of the present invention；
Fig. 3 is the side view of surface-wave antenna described in the embodiment of the present invention；
Fig. 4 is stickogram of the invention；
Fig. 5 is peak gain and gross efficiency figure of the invention；
Fig. 6 (a), Fig. 6 (b) are the present invention when frequency is 20GHz, on phi=0 ° and phi=90 ° of rolling angle plane
Antenna pattern；
Fig. 6 (c), Fig. 6 (d) are the present invention when frequency is 22GHz, on phi=0 ° and phi=90 ° of rolling angle plane
Antenna pattern；
Fig. 6 (e), Fig. 6 (f) are the present invention when frequency is 24GHz, on phi=0 ° and phi=90 ° of rolling angle plane
Antenna pattern.
Description of symbols:
| Label | Title | Label | Title |
| 1 | Feed probes | 2 | Metal floor |
| 3 | Upper layer metal plate | 4 | Short-circuit via hole |
| 5 | The empty slot of gradual change width | 6 | Dielectric-slab |
| La | Empty slot is along lateral length | Lg | The long side of dielectric-slab |
| L1 | The position on long (width) side of empty slot | L2 | The position on short (width) side of empty slot |
| Wg | The broadside of dielectric-slab | W1 | The length on long (width) side of empty slot |
| W2 | The length on short (width) side of empty slot | df | The position of feed probes |
| d | The diameter of short-circuit via hole | p | The spacing of short-circuit via hole |
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
As shown in Figure 1 to Figure 3, substrate described in the embodiment of the present invention integrates gradual change width surface wave antenna, including feed is visited
Needle 1, metal floor 2, upper layer metal plate 3, short-circuit via hole 4 and dielectric-slab 6, the metal floor 2 and the upper layer metal plate 3 divide
Not Wei Yu the dielectric-slab 6 upper and lower surfaces, upper layer metal plate 3 be equipped with along laterally graded width empty slot 5, the short circuit
Via hole 4 is arranged along the edge of empty slot 5, is equipped with feed probes 1 in the longitudinal center position of empty slot 5, the feed probes pass through
Dielectric-slab 6 is connect with upper layer metal plate 2.
In the present embodiment, as shown in Fig. 2, upper layer metal plate 3 has the empty slot 5 along laterally graded width, empty slot 5
Long (width) side is W1, short (width) side is W2, empty slot 5 is L along lateral lengtha.The length of the empty slot 5 of the upper layer metal plate 3
(width) side is L at a distance from the broadside of upper layer metal plate 31, short (width) side of empty slot 5 is at a distance from the broadside of upper layer metal plate 3
For L2。
The inner surface of the short circuit via hole 4 covers copper, and the parameter of short-circuit via hole is true according to antenna performance and impedance matching requirements
It is fixed.In the present embodiment, the short-circuit via hole 4 is distributed in the edge of the empty slot 5 of the upper layer metal plate 3；Short-circuit via hole 4 it is straight
Diameter is d, and the spacing between every two adjacent short circuit via hole 4 is p.
The position of the feed probes 1 is determined according to the performance of antenna and the requirement of impedance matching, so that the surface wave day
Input impedance of the line in the feed placement of feed probes is identical as the impedance of the signal transmssion line connected.In the present embodiment
In, the feed probes 1 are located at the longitudinal center of empty slot 5, are d at a distance from length (width) side of empty slotf。
Further, the dielectric-slab 6 is solid dielectric, and in the present embodiment, the long side of dielectric-slab 6 is Lg, broadside
For Wg.The metal floor 2 and upper layer metal plate 3 such as are at the big rectangle, and consistent with the dimension of the cross section of dielectric-slab 6.In order to
Reach low section, effect easy of integration, the metal floor 2 and upper layer metal plate 3 are planar structure, and are all close to dielectric-slab 6.
Further, surface-wave antenna described in the present embodiment is made using printed-board technology.
The outdoor scene operation of a preferred embodiment of the invention is specific as follows:
The antenna mount is 2.2 in dielectric constant, loss angle tangent 0.0009, and thickness h is the dielectric layer of 3mm
On；Length (width) side W of the empty slot 5 of the gradual change width of upper layer metal plate 31Length be 12mm, short (width) side W2Length be 4mm.
The empty slot 5 is along lateral length LaFor 151.5mm, the length (width) of empty slot 5 while and while short (width) with 3 both sides of upper layer metal plate
Broadside distance L1、L2For 3mm.The long side L of the dielectric-slab 6gLength be 184.5mm, broadside WgLength be 40mm.
The diameter d of the short circuit via hole 4 is 1mm, and the spacing p of two neighboring short circuit via hole is 1.5mm.The feed probes 1 and empty slot 5
Length (width) side distance dfFor 3.5mm.
Fig. 4 is reflection coefficient chart of the invention, as can be seen from the figure: when frequency is greater than 17GHz, | S11 | <-
10dB, and the result of the result and Electromagnetic Simulation (ANSYS HFSS) measured is relatively coincide.
Fig. 5 is peak gain and gross efficiency figure of the invention, it can be seen from the figure that when upper layer metal plate is infinity
When, the peak gain maximum of antenna can reach 20.4dBi.When the dimension of upper layer metal plate is finite value, simulation result is shown,
Frequency is relatively high greater than the peak gain in the frequency band of 18.5GHz.Final measurement shows that antenna maximum peak gain has
17.7dB, and the 3dB gain bandwidth of antenna is 19GHz-24.5GHz.It notices in the 3dB gain bandwidth of antenna, antenna
Global radiation efficiency is above 90%.
Fig. 6 (a) to Fig. 6 (f) is that the present invention is worked respectively in 20GHz, 22GHz and 24GHz, phi=0 ° and phi=90 °
Roll angle plane on antenna pattern.Directional diagram can be seen that the antenna with good end-fire performance, side from figure
Level is less than -10dB, and cross polarization can be ignored, and the result of the result and Electromagnetic Simulation (ANSYS HFSS) measured compares kiss
It closes.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of substrate integrates gradual change width surface wave antenna, which is characterized in that including metal floor, upper layer metal plate, medium
Plate, short-circuit via hole and feed probes, the upper layer metal plate and metal floor are located at the upper and lower surfaces of dielectric-slab, described
Upper layer metal plate is equipped with the empty slot along laterally graded width, and the short circuit via hole is arranged along the edge of the empty slot, the feedback
The longitudinal center position of the empty slot is arranged in electric probe, and passes through dielectric-slab and connect with upper layer metal plate.
2. substrate as described in claim 1 integrates gradual change width surface wave antenna, which is characterized in that the upper layer metal plate
Empty slot long side and the length of short side are respectively 12mm, 4mm, and the empty slot is 151.5mm along lateral length.
3. substrate as claimed in claim 2 integrates gradual change width surface wave antenna, which is characterized in that the long side of the empty slot and
Short side is 3mm at a distance from the metal plate broadside of upper layer.
4. substrate as claimed in claim 2 integrates gradual change width surface wave antenna, which is characterized in that table in the short circuit via hole
Copper is covered in face, and the diameter of short-circuit via hole is 1mm, and the spacing of two neighboring short circuit via hole is 1.5mm.
5. substrate as claimed in claim 2 integrates gradual change width surface wave antenna, which is characterized in that the position of the feed probes
It sets and is determined according to the performance of antenna and the requirement of impedance matching, so that the surface-wave antenna is in the feed placement of feed probes
Input impedance is identical as the impedance of the signal transmssion line connected.
6. substrate as claimed in claim 5 integrates gradual change width surface wave antenna, which is characterized in that the feed probes with it is upper
The distance of the empty slot long side of layer metal plate is 3.5mm.
7. substrate as claimed in claim 2 integrates gradual change width surface wave antenna, which is characterized in that the dielectric-slab is solid
Dielectric, the long side of dielectric-slab are 184.5mm, broadside 40mm.
8. the substrate as described in any claim in claim 1 to 7 integrates gradual change width surface wave antenna, feature exists
In, the metal floor and upper layer metal plate the big rectangle such as be.
9. substrate as claimed in claim 8 integrates gradual change width surface wave antenna, which is characterized in that the metal floor and upper
Layer metal plate is planar structure, and is close to dielectric-slab.
10. substrate as claimed in claim 8 integrates gradual change width surface wave antenna, which is characterized in that the surface-wave antenna
It is made using printed-board technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305729.2A CN110021813B (en) | 2019-04-16 | 2019-04-16 | Substrate integrated gradient width surface wave antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910305729.2A CN110021813B (en) | 2019-04-16 | 2019-04-16 | Substrate integrated gradient width surface wave antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110021813A true CN110021813A (en) | 2019-07-16 |
| CN110021813B CN110021813B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910305729.2A Active CN110021813B (en) | 2019-04-16 | 2019-04-16 | Substrate integrated gradient width surface wave antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271445A (en) * | 2020-07-08 | 2021-01-26 | 中山大学 | Surface wave antenna with high gain, low profile and large bandwidth |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2402554A1 (en) * | 2000-03-11 | 2001-09-20 | Steven Gregory O'keefe | Multi-segmented dielectric resonator antenna |
| CN101179149A (en) * | 2007-11-12 | 2008-05-14 | 杭州电子科技大学 | One point coaxial feed low profile back-cavity circularly polarized antenna |
-
2019
- 2019-04-16 CN CN201910305729.2A patent/CN110021813B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2402554A1 (en) * | 2000-03-11 | 2001-09-20 | Steven Gregory O'keefe | Multi-segmented dielectric resonator antenna |
| CN101179149A (en) * | 2007-11-12 | 2008-05-14 | 杭州电子科技大学 | One point coaxial feed low profile back-cavity circularly polarized antenna |
Non-Patent Citations (1)
| Title |
|---|
| WANGWANG HAN ET-AL: "《Low-Cost Wideband and High-Gain Slotted Cavity》", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271445A (en) * | 2020-07-08 | 2021-01-26 | 中山大学 | Surface wave antenna with high gain, low profile and large bandwidth |
| CN112271445B (en) * | 2020-07-08 | 2022-03-29 | 中山大学 | Surface wave antenna with high gain, low profile and large bandwidth |
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| Publication number | Publication date |
|---|---|
| CN110021813B (en) | 2020-08-11 |
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